Is a female teacher sinful if she helps students cheat on exams at the request of the school principal?

Helping students in exams to prevent them from failing is cheating and a betrayal of trust. It also contradicts the wisdom behind exams, which is to differentiate between students' levels. It is not permissible to obey the director in this matter. He can help students by teaching them, reviewing lessons, and strengthening their understanding. Accepting work at the school is permissible if you do not participate in cheating and fulfill your required duties.