"SDG 4 is a vision to ensure everyone no matter who you are gets access to quality education.It is also within the 17 SDG goals of the United Nations. They want to enable both genders complete free primary and secondary schooling by 2030. Also to build and upgrade education facilities and finally to increase the supply of qualifying teachers".

Here are all the targets within SDG 4 :

As you can see , this is in order starting from primary school to higher education.