I am confused about tenses. What are the tenses that I need to know for GCSE?

I have a table of alll the tenses GCSE students need to know. This table will allow me to talk the student through the main tenses needed for GCSE, bearing in mind that we are only dealing here with regular verbs. When the student is clear about tenses and their meaning in English, I can introduce my tables of conjugations of irregular verbs for each tense (particularly present tense, preterite and future)