The session of the board shall be limited to twenty days, and but one session shall be held in any one year, except upon extraordinary occasions, when, upon the recommendation of two thirds of the board, the governor may order a special session.*

*This provision appears to have been superseded or may be obsolete, see this codified Iowa Constitution, Art. IX, 1st Education, §15; the board of education was abolished in 1864 by 1864 Acts, ch 52, §1

Statutory provisions, see Iowa Code chapters 256 and 262