What Is CHS-CY1?

What CHS-CY1 Actually Is

CHS-CY1 is the exam code for the CodeHS Cybersecurity Level 1 Certification, issued by CodeHS. It is an entry-level credential designed to verify that a student understands the foundations of cybersecurity: how threats like phishing and ransomware work, how basic encryption functions, how computers and networks are organized, and how to stay safe online.

The name matters because the acronym is easy to confuse with unrelated credentials. This article is about one thing only: the CodeHS exam taken through the CodeHS certification program. If you are looking for a quick definition of the code itself, our explainers on what CHS-CY1 stands for and the meaning of CHS-CY1 cover the naming in more detail.

Exam Format and Rules at a Glance

The structure of the exam is simple, which is one of its strengths for first-time certification candidates. Everything below comes from the official CodeHS certification overview and the CodeHS Certifications FAQ.

With 45 questions in 90 minutes, you have roughly two minutes per question. That is generous for a multiple-choice exam, so pacing is rarely the problem. The real challenge is breadth: six different topic areas, each with its own vocabulary. For the exact cutoff and how it translates to question counts, see our breakdown of the CHS-CY1 passing score.

The Six Content Areas Explained

CodeHS publishes six "Topics & Concepts Covered" headings for the exam. It does not publish percentage weights for them, so you should treat all six as fair game and avoid betting on any single area. Here is what each one contains, using the official topic names.

For a deeper walk through every sub-topic, read our complete guide to the six CHS-CY1 exam domains.

What the Questions Feel Like

Because every question is multiple choice, the exam rewards recognition and reasoning rather than recall of long definitions. The distinctive feature of this exam, compared with a purely vocabulary-based test, is that several topics invite you to apply a concept to a short scenario.

Scenario-style thinking

In Cybersecurity Essentials, you may be asked to match a described situation to a threat or to a CIA Triad property. A message that tricks a user into clicking a link points to phishing; a situation where data is altered without authorization is an integrity problem. Practice mapping scenarios to labels instead of memorizing definitions in isolation.

Working through a cipher

In Cryptography, expect to reason about how a Caesar shift or a Vigenere keyword transforms text, and why frequency analysis defeats simple substitution but struggles more against Vigenere. If you can explain in one sentence why a longer key makes brute force harder, you are in good shape.

Reading a query

In Digital Safety and Data Security, SQL appears at an introductory level. You should be able to read a basic SQL query and recognize how SQL injection abuses unvalidated input to change what a query does.

Wondering how demanding all of this is in practice? We cover that honestly in how hard the CHS-CY1 exam is.

Who Should Take It

CodeHS positions this certification as accessible: there are no prerequisites. That makes it a natural fit for several groups.

• Students in a CodeHS cybersecurity course who want a verifiable credential at the end of the class.
• Beginners exploring a technical career path who want a structured first milestone before attempting harder certifications.
• Teachers and programs that use certification as a measurable outcome for a cybersecurity curriculum.

If you are weighing whether to commit, our look at CHS-CY1 requirements explains eligibility in detail, and the worth-it analysis helps you decide whether the credential matches your goals.

Vouchers, Attempts, and Expiry

CodeHS handles access to certification exams through vouchers. The key rules from the official sources are:

1. A voucher is required for each exam attempt. If you do not pass and want to try again, you will need a new voucher rather than reusing the first one.
2. The exam is online and timed. Once you begin, the 90-minute clock governs your session, so start only when you can give it your full attention.
3. The credential lasts 10 years. After that period, it expires.

Specific fees are not published in the official sources used for this article, so we will not quote a price here. Ask your teacher or program administrator how vouchers are distributed in your setting, and see our page on CHS-CY1 certification cost for how to think about the expense. For scheduling questions, our guide to CHS-CY1 exam dates covers what to check.

Where the Credential Fits in a Career

It is worth being realistic. CHS-CY1 is a foundational, entry-level certification. It signals that you have learned the core vocabulary and concepts of cybersecurity, which is valuable as a first credential on a resume, in a school or college application, or as evidence of initiative when pursuing internships and entry-level IT exposure.

It is not a substitute for the professional certifications that employers commonly require for dedicated security roles, and we will not pretend it carries a specific salary. Because no compensation data is published by CodeHS for this credential, we avoid quoting figures. If you want the nuanced picture, our articles on CHS-CY1 jobs and the CHS-CY1 salary guide discuss how entry-level credentials like this one contribute to a larger career path.

The practical value is in the skills you build while preparing: recognizing phishing, understanding how encryption and networks work, reading basic SQL, and thinking about digital footprint. Those carry forward into any technology path.

A Domain-Ordered Prep Plan

Since CodeHS publishes no weights, a balanced plan that gives every domain attention is the safest approach. The sequence below orders the domains so that earlier concepts support later ones: ethics and threats first, then the technical mechanics, then networking, then infrastructure, then the applied safety and SQL material.

You can compress or stretch this to fit your schedule. For a full method, see the CHS-CY1 study guide, and keep the CHS-CY1 cheat sheet handy for last-minute review. When you are ready to test yourself, try the CHS-CY1 practice tests to simulate the real format, and return to them after each week to confirm that the material is sticking.

Frequently Asked Questions