In the United States the official qualifications for becoming president, as laid out in the Constitution, are incredibly low. The only requirements are that:
No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any person be eligible to that Office who shall not have attained to the Age of thirty five Years, and been fourteen Years a Resident within the United States.
Is it pretty standard in modern democracies to set the qualifications so low and allow the electorate to vet the appropriateness of the candidates qualifications? Or are there countries that require specific educational and professional achievements from their candidates before they seek high elective office?