Within this second subtitle of your curriculum vitae, and as its name says, you must include the most relevant and pertinent information about your academic background, as well as any other additional data that is important for the job you want to opt for.
Remember that you must start in chronological order all the stages of study, starting with the most recent one until you finish with the oldest one. But do not stretch too much and follow this specific list on what data to put in this section:
Name of the studies (for example: basic, secondary, superior, etc.)
Start date and end date, as well as the name of the institution where you attended that stage of study
In some cases, if necessary and required, you must place the qualification obtained in each of your stages of study. But only when it is mandatory to do so, since it is usually not required.
In some types of curriculum vitae, when you have completed higher education, it is not necessary to place those of lower rank, such as secondary or basic, since it is evident that you have completed all of them to complete the upper cycle. In the same way everything will depend on your curriculum, your requirements and the company or organization to which you are opting.