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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryPublic Administration & EducationContinuing Education InstitutesWinterthurSchulklar Petralia
Schulklar Petralia Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company SCHULKLAR offers preparation courses for the Swiss Matura exam, specifically for the short and long gymnasium. The courses are conducted both online and in-person in small groups, with the goal of individually preparing students for the exam.

AI-generated
Offering

Products & services

Industry:Continuing Education Institutes
✓ Offered2
Gym entrance exam prep
Preparation courses for the Gym entrance exam for Langgymnasium, Kurzgymnasium and HMS; online with video call, small groups, practice tests, mock exam and course materials.
EssayPRO
Individual training for essay writing for Langgymnasium and Kurzgymnasium/HMS; with a personal introductory lesson, correction and grading of five essays, and written feedback.
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4.1/5

Schulklar Petralia

Trust & reputation

ranQ Trust Score of Schulklar Petralia: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Schulklar Petralia scores 81.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.83.524%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.72.110%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Schulklar Petralia scores 60.5 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.58.012%
  • 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%
Schulklar Petralia scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
Schulklar Petralia scores 0.6 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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Schulklar Petralia reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.9 out of 5 stars from 16 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.916
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Gernstrasse 64
8409 Winterthur
Opening hours
Mon
09:00 - 18:00
Tue
09:00 - 18:00
Wed
09:00 - 18:00
Thu
09:00 - 12:00
Fri
09:00 - 12:00
Sat
09:00 - 12:00
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-422.266.212
Founded
2022 · 4 years
Last commercial register change
October 22, 2025
Employees
1 to 10
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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