1 EXHIBIT 23.1 -- CONSENT OF ERNST & YOUNG LLP INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in the Registration Statements (Form S-3 No. 333-43807, Form S-3 No. 333-23745, and Form S-3 No. 333-53807) of National TechTeam, Inc. and in the related Prospectuses and in Registration Statements (Form S-8 No. 333-04731 and Form S-8 No. 333-04733) pertaining to the National TechTeam, Inc. 1989 Amended and Restated Employees' 401 (k)/Profit-Sharing Plan and Trust of our report dated February 23, 2000 with respect to the consolidated financial statements of National TechTeam, Inc. included in the Annual Report (Form 10-K) for the year ended December 31, 1999. /s/ Ernst & Young LLP Detroit, Michigan March 29, 2000