UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13A-16 OR 15D-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission file number: 001-39360

SKILLFUL CRAFTSMAN EDUCATION TECHNOLOGY LIMITED

7th Floor, West Lobby, Building 7B

Shenzhen Bay Science and Technology Ecological Park

Nanshan District, Shenzhen, Guangdong Province, China

(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F: Form 20-F ☒ Form 40-F ☐

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

On December 19, 2025, Skillful Craftsman Education Technology Limited, a Cayman Islands exempted company with limited liability (the “Company”), entered into an Amendment Agreement (the “Amendment Agreement”) to Promissory Note Purchase Agreement (the “Original Agreement”) with Mr. Xuejun Ji, a major shareholder of the Company, Mr. Peng Wang, a director of the Board of the Company (the “Board”) and Mr. Bin Fu, Chairman of the Board and Chief Executive Officer of the Company (the “Purchasers”). The Amendment Agreement is to amend the Original Agreement dated Septmeber 24, 2024 to extend the maturity date of certain promissory notes issued to the Purchasers (the “Notes”) for six months from September 24, 2025 to March 31, 2026 (the “Amended Maturity Date”). Pursuant to the Amendment Agreement, the entire outstanding principal amount of the Notes, together with any accrued and unpaid interest thereon, if any, shall be due and payable in full on the Amended Maturity Date. Pursuant to the Amendment Agreement, the Company also amended and restated the original Notes to extend the maturity date of such Notes from September 24, 2025 to March 31, 2026 (the “Amended and Restated Notes”). The foregoing description of the Amendment Agreement and Amended and Restated Notes does not purport to be complete and is qualified in its entirety by reference to the complete text of Amendment Agreement and Form of Amended and Restated Notes, copies of which are filed as exhibits hereto and are incorporated herein by reference.

Exhibits Index

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: December 29, 2025