The IIE has more accredited higher education qualifications than any other – currently over 90. Buy Independent Institute of Education diploma online. IIE are a wholly-owned subsidiary of AdvTech Ltd, a public company listed on the Johannesburg Stock Exchange (Pty) LTD. The IIE has several systems and processes which are driven centrally by our Central Academic Team which is responsible for the academic governance and quality assurance of all programmes delivered through the campuses of all its educational brands, including Rosebank College.