GC: n

S: MMK – http://pdm.medicine.wisc.edu (last access: 6 March 2013); http://www.bioscience.heacademy.ac.uk/resources/themes/quals.aspx (last access: 3 September 2014).

N: 1. – educational (adj): 1650s, “due to education;” 1830, “pertaining to education;” from education + -al (1). Meaning “intending or serving to educate” is attested by 1935. Related: Educationally.

– background (n): “the ground or situation to the rear of what is in front or most engaging of the attention,” 1670s, from “back” (adj.) + “ground” (n.); original sense was theatrical, later applied to painting (“part of a picture representing what is furthest from the spectator”), 1752. Figurative sense is first attested 1854.

2. Educational background basically involves all qualifications, particular courses and majors people have ever undergone. Interviewer might ask people because maybe he wants to see the relevancy between people education and the job people are seeking. So people must keep it in mind to relate (most of) people educational skills with the job.
S: 1. OED – https://www.etymonline.com/search?q=educational+background (last access: 7 June 2020). 2. Quora – https://www.quora.com/What-is-the-meaning-of-educational-background (last access: 7 June 2020).

SYN: education, background. (depending on context)

S: GDT – http://gdt.oqlf.gouv.qc.ca/ficheOqlf.aspx?Id_Fiche=1299684 (last access: 7 June 2020)

CR: educational research, ICT in Education, teaching innovation, vocational education.