That is taking the mick. My bet would be that the school have assumed that you for some reason have chosen to train part time. Happened to me during my CPL. I couldn't explain why others were flying 5-6 days a week and me 2-3. In the end and after 3 weeks, I walked into the office and challenged them. I was told "You wanted to train part time didn't you!?!"
In the end they came up with this assumption because I used to live off-field.