Series 3

Series 3 was filmed during August 2005 at St Joseph's College in Ipswich, and broadcast during the following April. The series returned to the setting of a 1950s grammar school called Charles Darwin Grammar, only this time, with an emphasis on practical sciences and boys and girls being taught separately. The languages teacher in series 1, Simon Warr, took on the additional role of headmaster in Series 3.

Student
It featured 16 boys and 16 girls who had just sat their GCSEs and mostly did well, though some failed.

School Song

 * ♪ As we strive to be the best, ♪
 * ♪ We must fight to beat the rest ♪
 * ♪ And we know that journey is a long one, ♪
 * ♪ Where only the strong one can ever win the prize ♪
 * ♪ So let's dedicate our lives ♪
 * ♪ To the brave men who survive, ♪
 * ♪ At the school where hard work is rewarded, ♪
 * ♪ Discipline applauded, the wanted victory♪
 * ♪ And may God be always there beside thee ♪
 * ♪ Solum Supersunt Fortissimi ♪

Trivia

 * This is the final season of the original UK version of That'll Teach 'Em.
 * Scott Peters was expelled during the series for misbehaviour and disrespect.
 * Brennon Gunston, Rosie Morton and Amy Jampa-Ngoen chose to leave the school voluntarily. However, Mr. Warr gave Amy his explicit blessing to leave the school as a result of her poor conduct record.
 * After failing to stop some girls from using the telephone in the laundry room, Victoria Buxton was forced to step down from her position as Head Girl. Her place was then taken by Sally Rushton.
 * Brennon Gunston and Rosie Morton were replaced with Joe Seath and Francesca Bruce respectively.
 * In the academic competition between the girls and the boys, the girls won overall, and most students only managed to pass one O Level.