34

                           EXHIBIT #31
                           -----------


                           CERTIFICATE



I, Norman M. Levine, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of DeVry
     Inc.;

2.   Based on my knowledge, this report does not contain any
     untrue statement of a material fact or omit to state a material
     fact necessary to make the statements made, in light of the
     circumstances under which such statements were made, not
     misleading with respect to the period covered by this report;

3.   Based on my knowledge, the financial statements, and other
     financial information included in this report, fairly present in
     all material respects the financial condition, results of
     operations and cash flows of the registrant as of, and for, the
     periods presented in this report;

4.   The registrant's other certifying officers and I are
     responsible for establishing and maintaining disclosure controls
     and procedures (as defined in Exchange Act Rules 13a-15(e) and
     15d-15(e)) for the registrant and have:

     a) designed such disclosure controls and procedures, or
        caused such disclosure controls and procedures to be
        designed under our supervision, to ensure that material
        information relating to the registrant, including its
        consolidated subsidiaries, is made known to us by others
        within those entities, particularly during the period in
        which this report is being prepared;

     b) designed such internal control over financial reporting,
        or caused such internal control over financial reporting
        to be designed under our supervision, to provide
        reasonable assurance regarding the reliability of
        financial reporting and the preparation of financial
        statements for external purposes in accordance with
        generally accepted accounting principles;

     c) evaluated the effectiveness of the registrant's
        disclosure controls and procedures and presented in this
        report our conclusions about the effectiveness of the
        disclosure controls and procedures, as of the end of the
        period covered by this report and based on such
        evaluation; and

     d) disclosed in this report any change in the registrant's
        internal control over financial reporting that occurred
        during the registrant's most recent fiscal quarter (the
        registrant's last fiscal quarter in the case of an annual
        report) that has materially affected, or is reasonably
        likely to materially affect, the registrant's internal
        control over financial reporting; and

35

5.   The registrant's other certifying officers and I have
     disclosed, based on our most recent evaluation of internal
     control over financial reporting, to the registrant's auditors
     and the audit committee of registrant's board of directors (or
     persons performing the equivalent functions):

     a) all significant deficiencies and material weaknesses
        in the design or operation of internal controls over
        financial reporting which are reasonably likely to
        adversely affect the registrant's ability to record,
        process, summarize and report financial information; and

     b) any fraud, whether or not material, that involves
        management or other employees who have a significant role
        in the registrant's internal controls over financial
        reporting.






May 11, 2004                 /s/ Norman M. Levine
                             --------------------
                             Norman M. Levine
                             Senior Vice President and Chief Finance Officer

36

                           CERTIFICATE



I, Ronald L. Taylor, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of DeVry
     Inc.;

2.   Based on my knowledge, this report does not contain any
     untrue statement of a material fact or omit to state a material
     fact necessary to make the statements made, in light of the
     circumstances under which such statements were made, not
     misleading with respect to the period covered by this report;

3.   Based on my knowledge, the financial statements, and other
     financial information included in this report, fairly present in
     all material respects the financial condition, results of
     operations and cash flows of the registrant as of, and for, the
     periods presented in this report;

4.   The registrant's other certifying officers and I are
     responsible for establishing and maintaining disclosure controls
     and procedures (as defined in Exchange Act Rules 13a-15(e) and
     15d-15(e)) for the registrant and have:

     a) designed such disclosure controls and procedures, or
        caused such disclosure controls and procedures to be
        designed under our supervision, to ensure that material
        information relating to the registrant, including its
        consolidated subsidiaries, is made known to us by others
        within those entities, particularly during the period in
        which this report is being prepared;

     b) designed such internal control over financial reporting,
        or caused such internal control over financial reporting
        to be designed under our supervision, to provide
        reasonable assurance regarding the reliability of
        financial reporting and the preparation of financial
        statements for external purposes in accordance with
        generally accepted accounting principles;

     c) evaluated the effectiveness of the registrant's
        disclosure controls and procedures and presented in this
        report our conclusions about the effectiveness of the
        disclosure controls and procedures, as of the end of the
        period covered by this report and based on such
        evaluation; and

     d) disclosed in this report any change in the registrant's
        internal control over financial reporting that occurred
        during the registrant's most recent fiscal quarter (the
        registrant's last fiscal quarter in the case of an annual
        report) that has materially affected, or is reasonably
        likely to materially affect, the registrant's internal
        control over financial reporting; and

37

5.   The registrant's other certifying officers and I have disclosed,
     based on our most recent evaluation of internal control over
     financial reporting, to the registrant's auditors and the
     audit committee of registrant's board of directors (or
     persons performing the equivalent functions):

     a) all significant deficiencies and material weaknesses
        in the design or operation of internal controls over
        financial reporting which are reasonably likely to
        adversely affect the registrant's ability to record,
        process, summarize and report financial information; and

     b) any fraud, whether or not material, that involves
        management or other employees who have a significant role
        in the registrant's internal controls over financial
        reporting.






May 11, 2004                 /s/ Ronald L. Taylor
                             --------------------
                             Ronald L. Taylor
                             President and Co-Chief Executive Officer

38

                           CERTIFICATE



I, Dennis J. Keller, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of DeVry
     Inc.;

2.   Based on my knowledge, this report does not contain any
     untrue statement of a material fact or omit to state a material
     fact necessary to make the statements made, in light of the
     circumstances under which such statements were made, not
     misleading with respect to the period covered by this report;

3.   Based on my knowledge, the financial statements, and other
     financial information included in this report, fairly present in
     all material respects the financial condition, results of
     operations and cash flows of the registrant as of, and for, the
     periods presented in this report;

4.   The registrant's other certifying officers and I are
     responsible for establishing and maintaining disclosure controls
     and procedures (as defined in Exchange Act Rules 13a-15(e) and
     15d-15(e)) for the registrant and have:

     a) designed such disclosure controls and procedures, or
        caused such disclosure controls and procedures to be
        designed under our supervision, to ensure that material
        information relating to the registrant, including its
        consolidated subsidiaries, is made known to us by others
        within those entities, particularly during the period in
        which this report is being prepared;

     b) designed such internal control over financial reporting,
        or caused such internal control over financial reporting
        to be designed under our supervision, to provide
        reasonable assurance regarding the reliability of
        financial reporting and the preparation of financial
        statements for external purposes in accordance with
        generally accepted accounting principles;

     c) evaluated the effectiveness of the registrant's
        disclosure controls and procedures and presented in this
        report our conclusions about the effectiveness of the
        disclosure controls and procedures, as of the end of the
        period covered by this report and based on such
        evaluation; and

     d) disclosed in this report any change in the registrant's
        internal control over financial reporting that occurred
        during the registrant's most recent fiscal quarter (the
        registrant's last fiscal quarter in the case of an annual
        report) that has materially affected, or is reasonably
        likely to materially affect, the registrant's internal
        control over financial reporting; and

39

5.   The registrant's other certifying officers and I have disclosed,
     based on our most recent evaluation of internal control over
     financial reporting, to the registrant's auditors and the
     audit committee of registrant's board of directors (or
     persons performing the equivalent functions):

     a) all significant deficiencies and material weaknesses
        in the design or operation of internal controls over
        financial reporting which are reasonably likely to
        adversely affect the registrant's ability to record,
        process, summarize and report financial information; and

     b) any fraud, whether or not material, that involves
        management or other employees who have a significant role
        in the registrant's internal controls over financial
        reporting.






May 11, 2004                 /s/ Dennis J. Keller
                             --------------------
                             Dennis J. Keller
                             Chairman & Co-Chief Executive Officer