Group chats and Androids

So I was added to a group chat with all iPhone users for class, and I have an Android as my main phone. I was wondering why I wasn't getting any texts until I looked it up and found out you cannot add an Android user to an already existing iMessage chat. So, I have a Mac and my Android phone number is attached to my Apple ID. I have an unused SE from work laying around, so I turned it on, connected it to WiFi, and set it up with my Apple ID. I wanted to know if I will now receive the group chat messages, as when I go to my Apple ID settings it says that I can be reached by iMessage at the number attached to "Reachable At", aka my Android phone number. Or, do I have to ask one of my classmates to also add my email attached to my Apple ID to the contact they have for me? Or, will they have to remove me then re-add me? I am completely unfamiliar with iPhones and my partner has an Android too so I can't test it with them. Thanks.