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Fifth & Sixth Grade

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Kelsey COstello (5th Grade)

Hello! My name is Mrs. Kelsey Costello. I look forward to being your child’s teacher for 5th grade. I hope to make a lasting impression on your child like my 5th grade teacher did to me (I still talk to her!). Let’s make learning fun and memorable!

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Steve Ganzer (5th Grade)

Hello. My name is Steve Ganzer. I've been teaching since 2003 and have taught 2nd through 6th grade during that time. I live close to Pioneer with my 12 year old daughter, Daphne. I look forward to working with your child this year at Pioneer Elementary! 


Ms. Barr
My name is Megan Barr, and this will be my 18th year in the classroom. I have also worked as an administrator, and also in a science museum, which was super cool. During non-work times, my husband, son, and I like to explore beaches, rivers, and lakes. We almost always take our dog, Bailey, with us. At home, I am enjoying reading, watching too much tv, and learning how to garden. I am super excited to join the staff of Pioneer School. Teaching is my passion and I look forward to meeting my students, creating a safe and welcoming classroom, and having some fun while learning. I believe in group work, focusing on *how* we know something, and celebrating successes. Stop by Room 23 and say hi!


Ms. Coolbear
My name is Rosemary Coolbear. I am excited to be one of the new 6th grade teachers at Pioneer. I just moved to the Sacramento area from Fresno where I taught 3rd grade. I have a 4-year-old daughter who will also be attending Pioneer this year. In my free time, my family likes to explore nature and travel.

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Amy Christensen (5th & 6th Grade SDC)

My name is Mrs. Christensen or Mrs. C if you prefer. I joined the Twin Rivers family in 2014 and teach 5th and 6th grade SDC. I have my Master’s degree in Special Education, love Disney, and you can often find me reading when I have a little time to myself. 

Makala_Jenkins_(SDC_Paraeducator) Card IconMakala Jenkins (SDC Paraeducator)

Ms. Makala