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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryPublic Administration & EducationContinuing education providerBaarOlga Kravchenko
Olga Kravchenko Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Olga Kravchenko runs Plunge, a language school offering German courses for adults and children, as well as private, group and corporate lessons. Its services also include exam preparation and courses in other languages, delivered in person and online.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Continuing education provider
✓ Offered6
Mini Group Courses
German mini-groups with 3–5 learners, personalised learning paths, speaking practice, exam preparation, Swiss German workshops and teacher-led speaking events in Zürich and Zug.
Private Language Lessons
Tailored one-to-one language lessons online or in person in Zug and Zürich, with structured learning plans, exam preparation, customised materials and personalised support.
German Speaking Practice Events
Monthly German speaking events in Zürich and Zug with structured tasks, games, discussion topics, level-based mini groups, guided practice and networking.
German Exam Preparation
Preparation for Goethe-Zertifikat, telc Deutsch, fide Test, SDS Test, KDE exams and Swiss naturalisation exams, in mini-groups or individually with mock tests and exam strategies.
Swiss German Workshops
Workshops for understanding and speaking Swiss German, included for mini-group students and focused on accents, habits and everyday communication in Switzerland.
Corporate Language Training
Customized language training for companies, with industry-specific or general content adapted to business needs and professional communication goals.
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3.4/5

Olga Kravchenko

Trust & reputation

ranQ Trust Score of Olga Kravchenko: 3.4 out of 5.0

Trust Score3.4/ 5.0

Solid

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Data basis 54% · As of November 2026

Olga Kravchenko has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Olga Kravchenko scores 35.6 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.0.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Olga Kravchenko scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Olga Kravchenko scores 10.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.10.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Olga Kravchenko reaches a ranQ Trust Score of 3.4 out of 5.0 — rated «Solid». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Bahnhofstrasse 7
6340 Baar

At a glance

Legal form
Sole proprietorship
UID
CHE-238.423.657
Founded
2026 · 0 years
Last commercial register change
April 9, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZGBaar
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
67.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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