Just as a student in a law class is to be understood to have already graduated from general education, anyone who is engaged in the chanting of the holy name of the Lord (Hare Krsna mantra) must have already passed all lower stages

Expressions researched:
"Just as a student in a law class is to be understood to have already graduated from general education, anyone who is engaged in the chanting of the holy name of the Lord—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare—must have already passed all lower stages. It is said that those who simply chant the holy name with the tip of the tongue are glorious"

Srimad-Bhagavatam

SB Canto 3

Just as a student in a law class is to be understood to have already graduated from general education, anyone who is engaged in the chanting of the holy name of the Lord—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare—must have already passed all lower stages. It is said that those who simply chant the holy name with the tip of the tongue are glorious.

SB 3.33.7, Translation and Purport

Oh, how glorious are they whose tongues are chanting Your holy name! Even if born in the families of dog-eaters, such persons are worshipable. Persons who chant the holy name of Your Lordship must have executed all kinds of austerities and fire sacrifices and achieved all the good manners of the Āryans. To be chanting the holy name of Your Lordship, they must have bathed at holy places of pilgrimage, studied the Vedas and fulfilled everything required.

As it is stated in the previous verse, a person who has once offenselessly chanted the holy name of God becomes immediately eligible to perform Vedic sacrifices. One should not be astonished by this statement of Śrīmad-Bhāgavatam. One should not disbelieve or think, "How by chanting the holy name of the Lord can one become a holy man to be compared to the most elevated brāhmaṇa?" To eradicate such doubts in the minds of unbelievers, this verse affirms that the stage of chanting of the holy name of the Lord is not sudden, but that the chanters have already performed all kinds of Vedic rituals and sacrifices. It is not very astounding, for no one in this life can chant the holy name of the Lord unless he has passed all lower stages, such as performing the Vedic ritualistic sacrifices, studying the Vedas and practicing good behavior like that of the Āryans. All this must first have been done. Just as a student in a law class is to be understood to have already graduated from general education, anyone who is engaged in the chanting of the holy name of the Lord—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare—must have already passed all lower stages. It is said that those who simply chant the holy name with the tip of the tongue are glorious. One does not even have to chant the holy name and understand the whole procedure, namely the offensive stage, offenseless stage and pure stage; if the holy name is sounded on the tip of the tongue, that is also sufficient. It is said herein that nāma, a singular number, one name, Kṛṣṇa or Rāma, is sufficient. It is not that one has to chant all the holy names of the Lord. The holy names of the Lord are innumerable, and one does not have to chant all the names to prove that he has already undergone all the processes of Vedic ritualistic ceremonies. If one chants once only, it is to be understood that he has already passed all the examinations, not to speak of those who are chanting always, twenty-four hours a day. It is specifically said here, tubhyam: "unto You only." One must chant God's name, not, as the Māyāvādī philosophers say, any name, such as a demigod's name or the names of God's energies. Only the holy name of the Supreme Lord will be effective. Anyone who compares the holy name of the Supreme Lord to the names of the demigods is called pāṣaṇḍī, or an offender.