Lately, I’ve noticed more and more discussions on online forums about children’s education, especially regarding international schools. My own child is about to choose their IB subjects, and while most choices are straightforward, we’re a bit stuck on Spanish. We’re debating between Spanish B and Spanish ab initio. My husband and I have done a lot of research and talked to some experienced parents, so I’m sharing our findings here to help other families facing the same dilemma.

Core Differences Between the Two Courses
To put it simply, IB language courses are divided into two main categories: A and B. Category A is for native-level speakers, while Category B is for learning the language as a second language, common in IB international schools in Spain. Within Category B, there are two different starting points based on a student’s existing language proficiency:
Spanish B: This course is designed for students who already have some foundation in Spanish. It’s offered at Standard Level (SL) and Higher Level (HL). If your child has studied Spanish for a few years at school or has been exposed to the language at home, this is usually the recommended starting point. Naturally, HL is much more demanding than SL, requiring a larger vocabulary, deeper grammatical understanding, and literary analysis skills.
Spanish ab initio: This is a Latin term meaning “from the beginning.” As the name suggests, this course is for complete beginners with no prior knowledge of Spanish (you can read about student experiences at schools like Kensington School). It is only available at Standard Level (SL). The curriculum starts with the very basics like the alphabet, pronunciation, and greetings, aiming to enable students to handle basic everyday communication after two years.
How to Choose for Your Child?
The key to choosing is to objectively assess your child’s current Spanish level. This assessment must be realistic—don’t be overly ambitious. If their Spanish is limited to a few travel phrases like ‘Hola’ and ‘Gracias,’ they should definitely choose ab initio. Forcing them into Spanish B would be extremely challenging and stressful, potentially harming not only their language learning but also their performance in other subjects. Conversely, if your child can already hold a basic conversation but lacks depth, they could try Spanish B SL. If they have a strong foundation, they could even aim for HL.
Here, drawing from information like recent Spanish IB results, I’ve compiled a simple table for a more direct comparison:
| Course Name | Suitable For | Learning Goal | Final Proficiency Requirement |
| Spanish ab initio SL | Complete or near-complete beginners | Master basic daily communication skills | Understand common expressions and engage in simple, direct conversation |
| Spanish B SL | Students with 2-3 years of prior study | Communicate using the language proficiently | Understand more complex topics and express opinions fluently |
| Spanish B HL | Students with a strong language foundation | Gain a deep understanding of the language and culture, with introductory literary analysis skills | Understand a wide range of long texts and express ideas fluently, accurately, and systematically |
Choosing the course that matches your child’s level is the most important thing. The ultimate goal of the IB program is university admission, so the wisest move is to choose the course where they can achieve a high score within their capabilities. Don’t fall into the trap of choosing a ‘challenge’ that’s completely out of reach, as it could pull down their overall score, which would be counterproductive. After assessing my child, we realized that although they’ve had some exposure to Spanish, their foundation isn’t solid. So, we decided to start with ab initio to build a strong base. I hope this information is helpful, and I welcome other experienced parents to join the discussion!