I'm aware of a couple of other examples of countries which have written into their constitution explicit education requirements governing the eligibility of presidential candidates; Turkey & the Philippines. Turkey requires candidates to have completed higher education, while the Philippines has a slightly lower barrier of requiring candidates to be literate.
In addition, the Algerian Parliament amended their election law in September 2019, introducing the "requirement for presidential candidates to have university degrees".
Article 101 of the Constitution of the Republic of Turkey:
The President of the Republic shall be elected directly by the public
from among Turkish citizens over forty years of age who are eligible
to be a deputy and have completed higher education.
Article VII, Section 2 of the Constitution of the Republic of the Philippines:
No person may be elected President unless he is a natural-born citizen
of the Philippines, a registered voter, able to read and write, at
least forty years of age on the day of the election, and a resident of
the Philippines for at least ten years immediately preceding such