Becoming a high school teacher typically takes four to five years after high school graduation, combining a bachelor’s degree with a state teaching license. The exact steps vary by state, but the core path is consistent: earn a degree, complete a teacher preparation program, pass required exams, and apply for your license. If you already have a bachelor’s degree in another field, alternative certification programs can get you into a classroom faster.
Earn a Bachelor’s Degree
Every state requires high school teachers to hold at least a bachelor’s degree from an accredited college or university. Because you’ll be teaching a specific subject to teenagers, your degree usually needs to include substantial coursework in the subject you want to teach. If you plan to teach high school biology, for example, you’d major or minor in biology. For English, you’d focus on English or a related humanities field.
Many aspiring teachers major in education with a concentration in their subject area, while others major in the subject itself and complete education coursework separately. Either route works, but you need both: deep knowledge of your subject and formal training in how to teach. Some states set minimum GPA requirements, often 2.5 or higher, so maintaining solid grades matters beyond just passing your classes.
Complete a Teacher Preparation Program
A teacher preparation program, sometimes called an educator preparation program, is where you learn classroom management, lesson planning, instructional strategies, and adolescent development. Most four-year education degrees build this training into the curriculum, including a semester of student teaching where you work in an actual high school classroom under a mentor teacher’s supervision.
Student teaching is the most important part of your preparation. You’ll plan lessons, grade assignments, manage a room full of teenagers, and gradually take over full teaching responsibilities. This experience typically lasts 12 to 16 weeks during your senior year. Many students describe it as the semester that confirms whether teaching is truly the right career for them.
If your bachelor’s degree didn’t include a preparation program, you can complete one through a post-baccalaureate program at a university or through a state-approved alternative route. Either way, the student teaching or clinical experience component is typically required before you can earn a full license.
Pass Your Certification Exams
Before receiving a teaching license, you’ll need to pass one or more standardized exams. The specific tests depend entirely on your state. Many states use the Praxis series, which includes a core academic skills test and a subject-specific content test for the area you want to teach. Other states have developed their own assessments.
You’ll want to check your state’s department of education website to find which exams are required and what qualifying scores you need. Prep materials and practice tests are widely available, and most candidates who studied their subject thoroughly in college find the content exams manageable. If you don’t pass on your first attempt, you can typically retake the exam after a waiting period.
Apply for Your State Teaching License
With your degree, preparation program, and exam scores in hand, you apply for a teaching license (sometimes called a certificate or credential) through your state’s department of education. The application process is usually online and includes submitting transcripts, test scores, proof of program completion, and passing a background check. Processing times vary, but most states issue initial licenses within a few weeks to a couple of months.
Your first license is typically provisional or initial, valid for a set number of years. To advance to a professional or standard license, you’ll need to complete additional requirements during your early teaching years. These often include mentorship programs, professional development hours, and sometimes an additional assessment. Plan on spending your first two to three years of teaching working toward that permanent credential.
Alternative Certification for Career Changers
If you already hold a bachelor’s degree in a non-education field, you don’t have to go back for a second four-year degree. Alternative certification programs are designed specifically for career changers and typically take one to two years to complete. These programs combine condensed coursework in pedagogy (the theory and practice of teaching) with supervised classroom experience.
The general path looks like this: you apply with your existing degree and transcripts, pass the required content exams for your subject area, complete an intensive training institute or coursework program, and then begin teaching under a provisional license while finishing remaining requirements. Some programs place you in a paid teaching position while you complete your training, which helps offset the cost of the career change.
Alternative routes have become increasingly common, and many school districts actively recruit candidates from these programs, particularly in subjects where teachers are hard to find. The license you earn through an alternative route is the same credential as one earned through a traditional path.
Subjects With the Strongest Demand
Your choice of subject significantly affects how easy it will be to find a job. In the 2024-25 school year, every state reported shortages in multiple teaching areas. Special education topped the list, with 45 states reporting shortages. Science was short in 41 states, and math in 40. Career and technical education and language arts also had deep shortages nationwide, measured by positions left vacant, filled by teachers on temporary certificates, or filled by teachers working outside their trained subject.
If you’re still choosing a subject area, these shortage fields offer real advantages: more job openings, greater geographic flexibility, and in some cases, signing bonuses or higher starting pay. Even if you’re drawn to a less in-demand subject like social studies or physical education, strong candidates still find positions, but you may need to be more flexible about location.
Loan Forgiveness Programs for Teachers
Teaching comes with access to several federal loan forgiveness programs that can significantly reduce or eliminate your student debt.
- Teacher Loan Forgiveness: After five complete, consecutive years of teaching at a qualifying low-income school, you can have up to $5,000 in federal student loans forgiven. If you teach secondary math, science, or special education and meet the “highly qualified” standard, that amount increases to $17,500. Only Direct Subsidized and Unsubsidized Loans and Stafford Loans qualify.
- Public Service Loan Forgiveness (PSLF): After making 120 qualifying monthly payments (essentially 10 years) while working for a public school or qualifying nonprofit school, your remaining Direct Loan balance is forgiven entirely. This program has no cap on the forgiveness amount, making it especially valuable for teachers with large balances.
- Perkins Loan Cancellation: If you have Federal Perkins Loans, up to 100% can be canceled for teaching full time at a low-income school or teaching shortage subjects like math, science, foreign languages, bilingual education, or special education. The cancellation happens in increments: 15% per year for the first two years, 20% for years three and four, and 30% in the fifth year.
You can’t double-count the same years of service for both Teacher Loan Forgiveness and PSLF, so it’s worth mapping out which program saves you the most money based on your loan type and balance. Many states also offer their own loan forgiveness or repayment assistance programs for teachers, particularly in shortage subjects.
What the Timeline Looks Like
For someone starting from scratch after high school, the typical timeline runs about four and a half to five years: four years for your bachelor’s degree and teacher preparation, a semester or more of student teaching (often built into year four), and a few months for exam results and license processing. Most people who follow this path begin teaching in August or September after their spring graduation.
For career changers with an existing bachelor’s degree, the timeline compresses to roughly one to two years depending on the alternative program’s structure and how quickly you pass your content exams. Some accelerated programs can have you in a classroom within a single school year.
Once you’re hired, expect your first year to be intense. New teachers routinely describe spending evenings and weekends on lesson planning, grading, and learning the rhythms of a school building. It gets more manageable. By year two or three, most teachers have built a library of lessons and systems that make the workload sustainable.