In-service teacher training can be made more effective by

In-service teacher training becomes more effective through follow-up procedures practised after the training.

A well-prepared training package (A) helps but does not ensure transfer to the classroom.

Making it residential (B) improves attendance, not necessarily long-term impact.

A cooperative approach (C) aids participation yet still needs reinforcement afterwards.

Follow-up sustains and applies the training, checking that learning reaches practice.

In-service education, unlike pre-service training, upgrades teachers already in the profession.