Exhibit 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement Nos. 333-248506, 333-249352, and 333-283768 on Form S-3 and 333-188240, 333-203806, 333-211213, 333-239453 and 333-277159 on Form S-8 of our
reports dated March 4, 2025, relating to the consolidated financial statements and financial statement schedule of Lincoln Educational Services Corporation and subsidiaries, and the effectiveness Lincoln Educational Services Corporation and
subsidiaries internal control over financial reporting appearing in this Annual Report on Form 10-K of Lincoln Educational Services Corporation for the year ended December 31, 2024.
/s/ Deloitte & Touche LLP
Morristown, New Jersey
March 4, 2025