The spelling of "rackley" can be explained using the International Phonetic Alphabet (IPA). In IPA, "r" is pronounced as [ɹ], "a" as [æ], "c" as [k], "l" as [l], and "ey" as [i]. Therefore, "rackley" can be transcribed as [ˈɹækli], indicating that it is pronounced with a stressed syllable followed by an unstressed syllable. This transcription can help English learners understand the pronunciation and spelling of the word "rackley."