Conversation so far:
When was Recep Tayyip Erdoğan born?
1954.
Where was he born?
Kasimpasa neighborhood of Istanbul.
Who were his parents?
His parents are Ahmet Erdogan and Tenzile Erdogan.
Who were his siblings?
Erdogan had a brother Mustafa (b.
1958) and sister Vesile (b.
1965).
Which school he attended?
Erdogan graduated from Kasimpasa Piyale primary school in 1965, and Imam Hatip school, a religious vocational high school, in 1973.

Question: What he did during high school?
Self-contained rewrite: What Recep Tayyip Erdoğan did during high school?