Teachers and Staff
Katie Horenberg
Bees (M-Tu-W) / Fireflies (Th-F),
Katie Horenberg has a Masters in Teaching from the University of Virginia in Early Childhood Special Education. She worked in Arlington County for 8 years as a pre-school special education teacher, taking a break after having her second child. She found Annandale Co-op for her kids a year later and fell in love with the school. She joined the Membership Board and began substitute teaching for all of the classrooms. Her two oldest children are both ACPS alumni, and her youngest is a current student. She loves reading, running, and singing whenever she can.
Ms. Kirsten Howard
T,Th,F 3’s: Grasshoppers,
Kirsten Lee Howard, teacher of three year olds, has always wanted to teach! She holds a Master’s Degree in Teaching Students with Special Needs from Wheelock College in Boston, MA and a Bachelor’s Degree in Psychology (with an Elementary Education focus) from Connecticut College. Kirsten taught preschool, kindergarten, and first grade during nineteen years of teaching. She is also a certified Responsive Classroom teacher and trainer.Kirsten was born and raised in New England. She is an avid reader, an amateur gardener, and rewatches all episodes of Joss Whedon’s Firefly at least once a year. Kirsten bakes good muffins, loves to make play-doh, and has yet to find a chocolate chip cookie that she doesn’t like! Her son & daughter are ACPS alum!
Mrs. Jacquie Diedrick
M-Th 4's: Spiders,
Jacquie Diedrick is the MWF 3s teacher. She has a Bachelor’s Degree in Elementary Education as well as a Master’s Degree in Literacy Education. Mrs. Diedrick has taught all over the country including, South Carolina, Ohio, Utah, and Alamaba. She found her passion for preschool last year and is so excited to continue working with three year olds at Annandale Co-Op this year! Jacquie also has two kids, a dog, and a great husband.
Ms. Hope Frazier
MWF 3s: Ladybugs,
Hope Frazier is the M/W/F 3s teacher. Ms. Frazier is originally from beautiful Washington State and earned her Bachelor's degree in Education from Western Washington University, with an endorsement in Special Education. She lives with her husband, Bret, and son Archie who’s in the Bees class. She brings both her personal and professional experience into the classroom every day. With a strong belief in equity and inclusion, she is passionate about creating a safe, supportive environment where every child feels seen, valued, and celebrated for who they are.
Ms. Frazier believes in meeting children where they are and honoring their individual needs, strengths, and pace of development. Her teaching philosophy centers on learning through play, where curiosity leads and exploration is encouraged. She also draws inspiration from Maslow's Hierarchy of Needs, understanding that children must first feel safe, cared for, and emotionally secure before meaningful learning can take place. She works to inspire independence by creating opportunities for children to take risks, make choices, and build confidence. She also firmly believes that a little mess is a sign of great learning. Don’t be surprised if your child comes home with muddy shoes, paint on their sleeves, and a big smile on their face!
Mrs. Amy Quigley
M-F 4’s: Dragonflies,
Amy Quigley, teacher of four- and five-year-olds, has a degree in Elementary Education from East Tennessee State University. Mrs. Quigley taught preschool in Connecticut and Tennessee for over twelve years, seven of which were at a NAEYC accredited preschool. She has been a member of Annandale Cooperative Preschool since 2007, as a substitute teacher in the twos’, threes’, and fours’ classrooms, Personnel Director, President, and Membership Director. Mrs. Quigley has four children, three of whom are ACPS graduates.
Mrs. Marie Sloane
Director of Education,
Marie Sloane, Director of Education, has a Master of Science in Teaching from the University of Chicago and Certificate of Advanced Study in Early Childhood Administration from National Louis University. An early childhood educator for over twenty years, she has taught preschool through third grade, worked in administration, and served as a consultant. Mrs. Sloane is a published author and experienced presenter, with more than thirty presentations at local, regional, and national conferences.
Kate McEnerney
Administrative Assistant,
Kate McEnerney, administrative assistant, connected with the ACPS community in 2019 when her oldest child enrolled in the Fireflies. As a former high school English teacher and ACPS board member, she’s excited to join the staff in supporting the whole school this year. A Chicago native, Kate loves cheering on the Bears, finding her next book to read, and exploring local gems with her two sons.
Larissa Jackson
Floating Teacher,
As the Floating Teacher, Larissa Jackson supports all classrooms at ACPS. Her belief in educational opportunities for everyone has guided her path to working with learners of all ages. She has coordinated ESOL programs for adults throughout Northern Virginia, designed and implemented enrichment programming for middle and high school students in D.C., and served elementary and middle school communities in Fairfax County as a School Social Worker. Most recently she’s supported preschool learners as a co-oping parent at ACPS. Larissa has a fascination and love of learning and playing outdoors. You are likely to find her exploring alongside her ACPS friends, marveling at the wonders that surround us in our outdoor learning space. Larissa holds a Bachelor’s of Arts from the College of William and Mary and a Master’s of Social Work from Virginia Commonwealth University.
