Headers of https://www.schoolspeak.com/Public/WebPageList.aspx?Community=55438001&group=18&name=SchoolIn:
HTTP/2 200
server: nginx
date: Wed, 27 Sep 2023 16:13:46 GMT
content-type: text/html; charset=utf-8
cache-control: private
set-cookie: ASP.NET_SessionId=hfww1vepte0kwzvprl1uig0r; path=/; secure; HttpOnly; SameSite=Lax
The page does exist and no X-Frame-Options header was found. But there can still be a iframe blocker script on this page. Go here for a full check.
School Handbook
Advanced iframe debug console - l: local messages, r: remote messages
User agent: CCBot/2.0 (https://commoncrawl.org/faq/)