When do class 1 forms usually come out at St. Adams High School, Musheerabad?

We might rent closer to the city side next year, and St. Adams High School in Musheerabad is near one of the areas we're looking at. Our younger one is 5 and would be starting class 1. I know nothing about the school beyond its board and grades, and I'm not asking anyone to rate it. If anyone has been through admissions there, roughly when in the year do class 1 forms come out, and is there an interaction or test at that age? My work travel means I'll get one proper visit at most, so I'd like to go at the right time with the right questions.