Answer:

ELHI

Answer	Crossword Clue
ELHI	Of grades 1-12
ELHI	Pre-college yrs.
ELHI	Some schools

ELHI	K-12, in education
ELHI	K-12
ELHI	For grades 1 to 12
ELHI	Covering all grades
ELHI	For grades 1 through 12
ELHI	Grades K to 12
ELHI	Grades 1-12
ELHI	Grades K-12

ELHI	For all grades
ELHI	From K thru 12
ELHI	Like some texbook publishing
ELHI	Pre-college
ELHI	For grades K-12
ELHI	Like some textbook publishing, briefly
ELHI	Pre-coll. catchall
ELHI	K-12, in the ed biz

ELHI	Textbook market category
ELHI	Like a school supplies mkt.
ELHI	K thru 12
ELHI	Precollege, for short
ELHI	Text publishing category
ELHI	Software market category
ELHI	Educ. catchall
ELHI	Educ. market

ELHI	For K thru H.S.
ELHI	Software mkt. category
ELHI	K-12 sch. years
ELHI	Like a certain textbook mkt.
ELHI	Like the pre-coll. supplies market
ELHI	K-12 catchall
ELHI	Education acronym
ELHI	For K-12 use

ELHI	Comprehensive, gradewise
ELHI	Curriculum range, briefly
ELHI	Acronym that includes middle sch.
ELHI	K-12, textbook-wise
ELHI	Precollege, to textbook publishers