I’m assuming that sign ups will go live next Friday, but the website doesn’t definitively say that:
From their website:
Tours will be led by current BHSEC students or staff and will be about 45 minutes long. The first tour is at 4:00pm and the last tour is at 5:00pm. Due to high demand, families can choose between an open house or a tour, but should not plan to attend both. Space is limited. Online registration begins FALL 2019 TBD. Tour dates will be posted Friday, September 20, 2019.