1) Circling the earth 2) Compulsory 3) Obligatory 4) Required 5) Required by rule 6) Something that has to be done 7) The recipient of a mandate 1) Compulsory 2) Integral 3) Mandatary 4) Necessary 5) Obligatory 6) Palestine 7) Palestinian 8) Preceptive 
adj., adv. absolutely demanded or required.
• (a.) Containing a command; preceptive; directory. • (n.) Same as Mandatary.
(adj) Mandatory is the specific requirements which are obligatory on the part of the person to whom such conditions are stipulated. Eg. A mandatory 14 days time need to be given when a shaw cause notice is served.
Compulsory - The LEA/School is required to do something.
Man'da·to·ry adjective [ Latin mandatorius .] Containing a command; preceptive; directory. 
Required, compulsory, or obligatory.
mandatory 1. Authoritatively ordered; obligatory; compulsory: 'It is mandatory that all students take two years of math.' 2. Pertaining to, of the nature of, or containing a command. 3. In law, permitting no option; not to be disregarded or modified: 'There was a mandatory clause in the contract.' 4. Having received a mandate; such as, as a nation....
required by rule required by rule