Section 2. Every person in control of a child described in section one shall cause him to attend school as therein required, and, if he fails so to do for seven day sessions or fourteen half day sessions within any period of six months, he shall, on complaint by a supervisor of attendance, be punished by a fine of not more than twenty dollars. No physical or mental condition capable of correction, or rendering the child a fit subject for special instruction at public charge in institutions other than public day schools, shall avail as a defence unless it appears that the defendant has employed all reasonable measures for the correction of the condition and the suitable instruction of the child. The Boston juvenile court shall have jurisdiction within the territorial limits described in section fifty-seven of chapter two hundred and eighteen of complaints hereunder. The Worcester juvenile court shall have jurisdiction, concurrent with the central district court of Worcester, of complaints hereunder. The Springfield juvenile court shall have jurisdiction, concurrent with the district court of Springfield, of complaints hereunder. The Bristol county juvenile court shall have jurisdiction, concurrent with all of the district courts of Bristol county, of complaints hereunder, and the presiding judge of said court shall establish hearing dates on a circuit basis to be held in such respective courts. Complaints hereunder brought in other district courts shall be heard in the juvenile sessions thereof.