A jury found the defendant, James G., guilty of sexual assault in the first degree in violation of General Statutes (Rev. to 1993) Â§ 53a-70 (a) (2), sexual assault in the third degree in violation of General Statutes Â§ 53a-72a (a) (2), and risk of injury to a child in violation of General Statutes (Rev. to 1999) Â§ 53-21 (2). The trial court rendered judgment in accordance with the jury verdict and sentenced the defendant to twenty-three years imprisonment. The defendant appealed, claiming that: (1) the trial court improperly allowed the state to introduce evidence of the defendants prior misconduct to show a common plan or scheme to abuse young girls sexually; (2) the trial court improperly declined to order the disclosure of confidential school and department of children and families records relating to T, the victim, and K, her older halfsister; (3) he was convicted under a statutory provision not in effect at the time of the alleged offense in violation of the ex post facto and due process clauses of the United States constitution; and (4) the trial court improperly denied the defendants motions for a mistrial and a new trial that were based on alleged prosecutorial misconduct. We reject the defendants claims and, accordingly, affirm the judgment of the trial court.