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Regarding your issue, I suggest you to try:
1.Try Automatic Setup in Outlook first
-Open Outlook.
-Go to File > Add Account (or Account Settings > Account Settings if adding to an existing setup).
-Enter your school email address and click Connect.
-If prompted, enter your email password and click OK. Outlook will attempt to configure the account automatically.
If it is not working, please consider
2.Identify Your Email Provider and Obtain Server Settings
-Use your school email and password to log into your school's webmail in a browser: . -Search online for "[your school name] webmail login" to find the URL. Note the interface:
-If it's Outlook Web App (looks like Outlook online), your school likely uses Microsoft 365. Once logged in:
-Click the gear icon (Settings) in the top right.
-Go to Mail > POP and IMAP (or search for "POP and IMAP" in settings).
-This page may display your incoming (IMAP/POP) and outgoing (SMTP) server names, ports, and encryption (SSL/TLS) details
3.If your school email supports IMAP or POP access. You can try:
-Go to Outlook.com
-Sign in or create a Microsoft account.
-Go to Settings > View all Outlook settings > Mail > Sync email
-Try adding your school email under Connected accounts
-You can also contact your school’s IT department or helpdesk to get the information
Note: If you unsure who the IT Admin is within your organization, you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support.
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