A teacher at a Manhattan high school was accused of inappropriate sexual behavior with female students on the same day a former assistant principal at another city high school was sentenced in a child pornography and solicitation case.

Johnny Cuevas, 37, a teacher at A. Philip Randolph High School, allegedly engaged in inappropriate contact with an 18-year-old student that included kissing her in a hotel swimming pool while they were both vacationing in the Dominican Republic last year, according to a report released yesterday by the school’s Special Commissioner of Investigation, Richard Condon. While Mr. Cuevas denied making contact with the student, who was in one of his classes at the time, two other teachers from the school who happened to be vacationing separately in the same hotel say they witnessed him with the student, according to the report.

Investigators also accused Mr. Cuevas of calling a 16-year-old female student and asking her questions of a sexual nature before inviting her to his apartment.

Investigators have faulted the principal of the school, Maurice Collins, for not taking action against the teacher. According to the report, Mr. Collins was aware of allegations of the teacher’s behavior and did nothing. The Department of Education said it will seek the termination of both the teacher and the principal.

Also yesterday, a former assistant principal at Murry Bergtraum High School in Manhattan, Steven Mark Rubinstein, who was found guilty of trading child pornography and trying to solicit children for sex via the Internet, was sentenced to prison for 10 years.