Charlie Eisenreich, Principal

  • Charlie Eisenreich Charlie Eisenreich begins his 31st year in education and fourth year as Principal of Tech High School. A lifelong resident of St. Cloud, Mr. Eisenreich is a former Academic All-American and Professional Baseball Player. He was a classroom teacher and coach for 10 years, and has a strong desire to provide Tech students with opportunities for success both in and out of the classroom. Mr. Eisenreich has been a lead trainer for 12 years for Minnesota's Positive Behavioral Interventions and Supports (PBIS) initiative. He understands the value of promoting student behavioral expectations school-wide and the positive impact it has on student achievement.

    Mr. Eisenreich is passionate about and involved with his two adult children and enjoys peaceful summer days and nights at the family's lake home. 


Stacey Haas, Assistant Principal

  • Stacey Haas

    Ms. Haas is serving her first year as Assistant Principal at Tech High School.  She holds a Bachelor of Science degree from Metropolitan State University, a Master of Arts degree from Concordia University, and a Specialist degree from Minnesota State University-Mankato.

    Ms. Haas served eleven years at Park Center Senior High in Osseo Area Schools in varying positions. She began her career by serving two years as a special education paraprofessional and nine years as a math teacher.  She was also able to pair her passion for education and soccer by coaching the JV girls’ soccer team. 

    In her free time, Ms. Haas loves to play soccer, bike or run along Minnesota’s beautiful trails, and spend time with her 3-year-old niece and 1-year-old nephew.  

    Two quotes that Ms. Haas lives by are: 

    “Not everything that is faced can be changed, but nothing can change until it is faced.” – James Baldwin

    “Do the best you can until you know better.  Then when you know better, do better.” – Maya Angelou


Tina Lahr, Assistant Principal

  • Tina Lahr

    Ms. Lahr is Assistant Principal at Tech High School this year. She has worked in the district for over 25 years as both teacher and administrator, having served at Kennedy and Oak Hill Community Schools as well as Tech and Apollo High Schools.

    Ms. Lahr was born and raised in the St. Cloud area and has an immense amount of pride and respect for the community. She looks forward to building a partnership with you to ensure your child learns and grows.

    Little known fact about Ms. Lahr: She has a great love of nature and animals, belonging to several organizations that support this, such as, the Nature Conservancy, Sierra Club, World Wildlife, National Wildlife, National Parks and Recreation, Arbor Day Foundation, and Humane Society, amongst others.


Jesús Sandoval, Assistant Principal

  • Jesus Sandoval

    Jesús Sandoval is one of the Assistant Principals at Tech High School.  He has been with District 742 since 2008 as a Mathematics Teacher, Administrative Intern, and serving on various district leadership committees.  Mr. Sandoval received his Bachelor of Science in Education from Bowling Green State University.  He received his Masters in Administration and Leadership along with his Principal and Superintendent Licensures from Saint Cloud State University. 

    Mr. Sandoval is passionate about the mission of 742 and is pleased to be apart of Tech High School’s traditions.  He is looking forward in working with students, families, and staff at Tech and strives to build positive relationships while leading with integrity.  He has a relentless commitment to student achievement and helping adolescents become lifelong contributing members of society. 

    When not at school, Mr. Sandoval can be found spending time with his family, cooking, playing games, working out, watching movies, or being outdoors.