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These commandments that I give you today are to be on your hearts. Impress them on your children.

Talk about them when you sit at home and when you walk along the road, when you lie down and when you get up.


Mrs. Linda Maas

Early Education 3K-4K

Linda was born and raised in Toledo, Ohio.  Upon high school graduation, she attended Dr. Martin Luther College in New Ulm, MN, from which she graduated in 1976 with a Bachelor of Science Degree in Elementary Education.  Her teaching experience includes…


1976-1977   Grades K-3 Teacher @ St. Paul’s, Riverside, CA

1977-1979   Grades 1-3 Teacher @ Our Savior, Pomona, CA

1979-1989   Before/After School Care for Our Savior

1989-1992   Grades K-8 Substitute Teacher for several Milwaukee WELS Schools

1992-1995   Kindergarten Teacher @ Centennial Lutheran School, Milwaukee

1996-2003   Grades K-3 Teacher @ Zum Kripplein Christi, Iron Ridge, WI

2003-2009   Grades 3-4 Teacher @ St. Matthew’s, Iron Ridge, WI

2009-2010   Grades K-8 Substitute Teacher for several area WELS Schools

2010-2016   Grade 2 Part-Time Teacher @ St. Lucas, Kewaskum, WI

2016-Present   3K/4K Preschool Part-Time Teacher @ St. Lucas, Kewaskum, WI


Linda has always loved children and so enjoys working with Jesus’ little lambs and sharing His love!  She is married to Michael Maas who is also a WELS teacher.  They have 2 adult children, 4 grandchildren, and enjoy boating and camping during the summer months.

Contact Information
Phone:  262-626-2680 x23

Mrs. Patti Derge

Grades 1-2

Bachelor of Science, Elementary Education, Dr. Martin Luther College

Contact Information
Phone:  262-626-2680 x19

Mrs. Karen Yttri

Grades 3-4

Technology Director

Graduated from University Wisconsin Milwaukee in 2002
(Earned WI State teaching license)
Earned Synod Certification through Martin Luther College by 2004
Currently taking graduate courses through Martin Luther College

Karen became a teacher "to see the light bulb come on" when students finally understand a concept.  She feels truly blessed to have received a call after graduating from a public university.  Sharing the Gospel message with Jesus Little Lambs makes teaching the best 'job' in the whole world.

Karen is happily married to her wonderful, loving husband Michael.  They have 3 energetic boys:  Micah is 12 years old, Malachi is 9, and Matthias is 7.  The family enjoys playing games together and going camping in the summer.

Contact Information
Phone:  262-626-2680 x12


Mrs.  Jennifer Trimmer

Grades 5-6

Masters of Education in special education, University of Virginia 2008.

Bachelor of Science in Elementary Education, Martin Luther College New Ulm, MN 2004.


State License: Ohio (currently working on transferring it to Wisconsin)



2018-2019: 5 & 6 at St. Lucas, Kewaskum, WI.

2016-2018: Kindergarten at St. Paul’s, Columbus, OH.

2011-2016: Grades 1-5 at Columbus City Schools, Columbus, OH.

2004-2011: Kindergarten, Resource teacher, & coach at Grace Lutheran, Falls Church, VA.


Contact Information
Phone:  262-626-2680 x13

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Mr.  Mark Hesse


7th & 8th Grade

2016-Present: 2nd, 7th, & 8th-grade Math and Language Arts Teacher at St. Lucas, Kewaskum, WI

2015-16: 6-8th-grade Math Teacher at Atonement, Milwaukee, WI

2013-15: Child Care Director, Youth Center Director, and Stay-at-home Dad at St. Paul's, Fort Atkinson, WI

2012-13: 6-8th-grade Language Arts Teacher at St. Mark's, Watertown, WI

Bachelor of Science in Elementary Education, Martin Luther College, New Ulm, MN 2011

Bachelor of Science in Secondary Education Communication Arts and Literature, Martin Luther College, New Ulm, MN 2011

Contact Information
Phone:  262-626-2680 x28

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