Hello, i hope this finds you well.
To answer your question: It really depends on what is important to you- is it education or relationships? Yes, both are important but you must realise that you can't have everything. However, in my perspective, I would suggest no. You can have relationships when you get older as well, and (usually) high school relationships aren't that 'serious'. Friendship and romantic relationships can change and disappear, but education and knowledge is something no one can take away from you. So, in conclusion, I don't recommend dating in high school.
Hope this helps you!!