The family sets the hantaran according to education level, such as a degree or a master's. Is this fair?

It does not affect the validity of the nikah, but making a degree into a ‘price’ can hurt and does not reflect a person's worth. Hantaran is a custom, so families are free to set it. But when it is tied to certificates, marriage starts to look like a business deal. It also burdens good men who do not yet have the means. Suggest more reasonable measures: the real cost of the celebration and what the man can afford. The bride-to-be herself can speak up, for example: ‘My degree is for serving others, not for being valued in hantaran.’ The young woman's own voice often softens the family's position. See negotiating the hantaran.