AI case study

Nagase BrothersEssay grading

A four-day grading lag bottlenecked exam prep. AI now assesses 100,000 students in seconds, offering detailed corrections.

Published|1 year ago

Key results

Correction Time
20 seconds
vs 4 days
Recommendation Rate
70%
Net Promoter Score
50

Result highlights

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The story

Context

A Japanese education provider operating prep and cram schools faced a national shift in university entrance exams toward practical written English skills.

Challenge

A full-time human team took four days to correct student essays, creating a bottleneck that prevented students from practicing until their final high...

Solution
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Scope & timeline

  • 90% of students intend to continue use

Quotes

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The company

Nagase Brothers logo

Nagase Brothers

toshin.com

Educational services and test preparation for university entrance exams in Japan.

IndustryEducation & Training
LocationMusashino, Tokyo, Japan
Employees1K-5K
Founded1971

The AI provider

Enterprise software, cloud infrastructure, and consumer electronics platform.

IndustrySoftware & Platforms
LocationRedmond, WA, USA
Employees100K+
Founded1975

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