Hello Mustanglady.
The dance class is at Basildon Fitness First and is on a Monday night at 8.30-9.30pm. It comes highly recommended by my Sis-in-law. They apparently do other classes on other nights at Southend, Braintree and Chelmsford Fitness First clubs, but I would think they are perhaps a bit too far away for you.
I used to live in Teviot Avenue, quite close to the school and had I not moved away from Aveley I would have left the school in 1980. I would have been in the year above you. I only attended that school in the third and fourth years which would have been 1977-79. If my memory serves me correctly I was in 3D and 4D. I can't remember my form teachers name from the third year but he was a Science teacher (not the Scottish one, Mr Johnstone, the other one!) and in the fourth year my form teacher was Mr. Downey, an English teacher. My closest friends back then would have been Kate Anthony and Debbie Hermitage. I may even have known you back then! I was known at the time as the only girl in the school to take the electronics link course at Thurrock Tech as one of my options.