224 LAWS OF MARYLAND. [CH. 105

they shall employ not less than two teachers for the regular
high school work, exclusive of instructors of special subjects
named under (e); (c) they shall provide a three years' course
of instruction of not less than one hundred and eighty actual
school days in each year, the same to conform to the standard
required by the state board of education; (d) the annual salary
of the principal shall be not less than one thousand dollars
($1, 000) for a person, holding a first class certificate, of less,
than three years' experience as principal of an approved high
school; not less than eleven hundred dollars ($1, 100) for a,
person, holding a first class certificate, of three years' expe-
rience as principal of an approved high school; not less than
twelve hundred dollars ($1, 200) for a person, holding a first
class certificate, of five years' experience as principal of an
approved high school; and not less than thirteen hundred dol-
lars ($1, 300) for a person, holding a first class certificate, of
eight years' experience as principal of an approved high school;
and the annual salary of each assistant teacher regularly em-
ployed shall be not less than six hundred dollars ($600) for a
person of less than three years' experience as teacher in an ap-
proved high school; not less than six hundred and seventy-five
dollars ($675) for a person, holding a first-class certificate of
three years' experience as teacher in an approved high school;.
not less than seven hundred and fifty dollars ($750) for a per-
son holding a first class certificate, of five years' experience as a
teacher in an approved high school; and not less than eight hun-
dred dollars ($800) for a person, holding a first class certificate,
of eight years' experience as teacher in an approved high school.
Experience prior to the year 1910 shall not be considered in
determining the salary of the principal and assistant teachers;
(e) provision shall be made for manual or industrial training
and domestic science courses, and also for an agricultural
course, as may be determined by the county board of education,
on the approval of the state superintendent of schools; (f) no
person shall be employed as principal or assistant teacher not
holding the appropriate certificate as provided, for in Chapter
8 of this Article. The course of instruction in schools of the
second group may be extended to four years by the county
board of education on the approval of the state superintendent
of schools, by the employment of such additional teacher or
teachers, as may be required by the state superintendent of
schools; provided, that the salary of such additional teacher or
teachers shall be paid wholly by the county board of education;
and in the schools of the second group, where the course of in-