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  • Products Explore what CodeHS has to offer for districts, schools, and teachers
    • Elementary | Middle
    • CodeHopStandards aligned coding for districts
    • TynkerGamified coding and apps
    • TypingEasy to use typing for schools
    • Middle | High
    • CodeHS ProComprehensive CS platform
    • CertificationsIndustry based credentials for CTE
    • Cyber RangeInteractive environment for cybersecurity labs
    • AI
    • AI CreatorEasily create lessons with AI
    • Vibe CodingGuided AI coding for students
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  • Platform
    • Assignments
      Create & configure your course assignments
    • Classroom
      Manage & organize your class with customizable settings
    • Grading
      Streamline your grading workflow.
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      Track & analyze student assessments & progress data
    • Write Code
      Write, run, & debug code all in a web-based IDE
    • Integrations
      Connect CodeHS to your district’s educational platform
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    Computer Science Curriculum

    Customizable K-12 CS curriculum

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  • Curriculum Customizable K-12 Computer Science Curriculum
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  • Professional Development Online & In-Person Training for Teachers
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    Start a new project

    Open a blank sandbox in any language.

  • Online IDE Write, Run, & Debug Code in an Online IDE
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    • Karel
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New Sandbox Program

Click on one of our programs below to get started coding in the sandbox!

Java

JavaScript

Python 3

HTML

Karel

Turtle

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Exercise Count Vowels in a Phrase

5 points

Exercise 5 points
This code has diverged from the student’s work.