juː wʊd biː splˈɪt ˌɪntʊ θɹˈiː ɡɹˈuːps jˈɪɹ sˈɛvən z ɔːɹ fˈoːɹ ɡɹˈuːps jˈɪɹ ˈeɪt z nˈeɪmd sˈɛvən ˈeɪ, sˈɛvən bˈiː, sˈɛvən sˈiː, jˈɪɹ sˈɛvən z ænd ˈeɪt ˈeɪ, ˈeɪt bˈiː, ˈeɪt sˈiː, ˈeɪt dˈiː jˈɪɹ ˈeɪt z, ænd ðiːz ɡɹˈuːps wʊd biː kɹiːˈeɪɾᵻd wɪðˌɪn jʊɹ hˈaʊs.
You would be split into 3 groups (year 7's) or 4 groups (year 8's) named 7A, 7B, 7C, (year 7s) and 8A, 8B, 8C, 8D (year 8s), and these groups would be created within your house.