LOCAL high schools are recruiting more teachers for subjects they expect to become more popular after the city government last year announced changes to the college entrance exam system.

The new system requires students to choose three test subjects — instead of one previously — from six options: history, geography, politics, chemistry, physics and biology.

Points scored in those subjects will be added to those gained in the compulsory subjects of Chinese, mathematics and English. As a result, there is now more demand for teachers in previously unpopular subjects, like geography and biology.