This isn’t actually super timely, as the open house isn’t until June 7, but it’s already on their calendar and if you’re interested in the school, it should be on yours:
The school’s website said they’ll post more info in May regarding time and registration. A head’s up - they ask families to register, to get a sense of how many people are showing up, but they don’t check you in at all.
Also, this is a great, great, great tour to get out of the way in the spring. Generally all specialized open houses happen within 2 or so weeks in the fall, just before the SHSAT happens. Your poor child will be overwhelmed with test prep, homework, tours/open houses at that point. Getting one out of the way now is a great idea if you can.