Phone: 469-752-9300 X39363


Degrees and Certifications:

BA Mathematics Master Chemistry Education

Mrs. Donna Costello

I have been teaching since 1985 and have been with Plano Senior High School since 1995. I teach BC Calculus and Honors Precalculus. 

  • Period 0: BC Calculus

    Period 1: BC Calculus

    Period 2: BC Calculus

    Period 3: Conference

    Period 4: Math Lab

    Period 5:Honors Precalculus

    Period 6:Honors Precalculus

  • BC Calculus 7th period or by appointment

    Honors Precalculus:  As per calendar schedule or by appointment

    There is a Math Lab available for tutoring during both lunches. This is for all PSHS couarses. 

    A lunch B205b

    B lunch B2000, B260a