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Ruth Posthumus Email & Phone Number
Adjunct Professor
at
Calvin University
1 work email found
@grpsf.org
LinkedIn matched
✓ Verified Jul 2026
4 data sources
Profile completeness 100%
Current company
Role
Adjunct Professor
Location
Grand Rapids, Michigan, United States
Company size
Who is Ruth Posthumus? Overview
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Quick answer
Ruth Posthumus is listed as Adjunct Professor at Calvin University, a with 6 employees, based in Grand Rapids, Michigan, United States. AeroLeads shows a work email signal at grpsf.org and a matched LinkedIn profile for Ruth Posthumus.
Ruth Posthumus previously worked as Board Member at Grand Rapids Student Advancement Foundation and President of the Board of Directors at Sowhope. Ruth Posthumus holds Master Of Education (M.Ed.), History, School Administration from Calvin College.
Company email context
Email format at Calvin University
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{first}.{last}@grpsf.org
86% confidence
AeroLeads found 1 current-domain work email signal for Ruth Posthumus. Compare company email patterns before reaching out.
Profile bio
About Ruth Posthumus
Passionate about providing opportunities for young people in my community and around the world. Experienced educator with 30+ years working in public schools.Believer in the enriching power of art to connect with others around the world.
Listed skills include Educational Leadership, Nonprofits, Consulting, Teaching, and 14 others.
Current workplace
Ruth Posthumus's current company
Company context helps verify the profile and gives searchers a useful next step.
Calvin University
5 roles
Ruth Posthumus work experience
A career timeline built from the work history available for this profile.
Board Member
CurrentI support the fundraising efforts of the foundation in order to bring more opportunity to the students of Grand Rapids Public Schools.
Jul 2017 - Present
Adjunct Professor
CurrentI work in the Education Department supervising student teachers.
Jan 2017 - Present
President Of The Board Of Directors
Apr 2009 - Jan 2016
Principal
Kenowa Hills Middle School
Jan 1993 - Jun 2013
1 education record
Ruth Posthumus education
FAQ
Frequently asked questions about Ruth Posthumus
Quick answers generated from the profile data available on this page.
What company does Ruth Posthumus work for?
Ruth Posthumus works for Calvin University.
What is Ruth Posthumus's role at Calvin University?
Ruth Posthumus is listed as Adjunct Professor at Calvin University.
What is Ruth Posthumus's email address?
AeroLeads has found 1 work email signal at @grpsf.org for Ruth Posthumus at Calvin University.
Where is Ruth Posthumus based?
Ruth Posthumus is based in Grand Rapids, Michigan, United States while working with Calvin University.
What companies has Ruth Posthumus worked for?
Ruth Posthumus has worked for Calvin University, Grand Rapids Student Advancement Foundation, Sowhope, and Kenowa Hills Middle School.
How can I contact Ruth Posthumus?
You can use AeroLeads to view verified contact signals for Ruth Posthumus at Calvin University, including work email, phone, and LinkedIn data when available.
What schools did Ruth Posthumus attend?
Ruth Posthumus holds Master Of Education (M.Ed.), History, School Administration from Calvin College.
What skills is Ruth Posthumus known for?
Ruth Posthumus is listed with skills including Educational Leadership, Nonprofits, Consulting, Teaching, Curriculum Development, Public Speaking, Strategic Planning, and Staff Development.
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