Apex domains cannot have CNAME records.
Question and response
Question
dig harrogatehighschool.net. NS
Answer
harrogatehighschool.net. 5 NS ns-1378.awsdns-44.org.
harrogatehighschool.net. 5 NS ns-1492.awsdns-58.org.
harrogatehighschool.net. 5 NS ns-183.awsdns-22.com.
harrogatehighschool.net. 5 NS ns-830.awsdns-39.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0