No you cannot apply for all jobs after schooling because there may be different qualification required for different jobs, It is not necessary that there are all jobs for you to apply. So you can apply only for those job vacancies you are eligible for. We repeatedly saying that you must read official notification before applying for any 10th Pass Job or 12th Pass jobs vacancy. Official notification will make you clear to choose whether you can apply with 10th/12th certificate or you need to be graduate for application.