When you visit studentstaschool.sharepoint.com, you don't land on a school website. Instead, you're immediately redirected to a Microsoft login page. That's not unusual for SharePoint sites on its own — many schools use Microsoft's platform for internal tools. What is unusual is that the domain itself seems to have no visible owner. WHOIS records return no match, and the site offers no contact information, about page, or any content explaining what it's for.
For a site that's asking you to sign in with your school or Microsoft account, that lack of transparency matters. A legitimate school SharePoint would typically be operated by a named institution with clear branding and support contacts. Here, you're essentially being asked to trust an anonymous domain. The technical security is fine — the connection is encrypted and Google hasn't flagged it for phishing — but the identity and transparency gaps are too big to ignore.
If you're wondering whether studentstaschool.sharepoint.com is safe, the real question is: who's behind it, and why do they need your login? Until those answers are clear, it's not worth the risk of handing over your credentials.